While it won’t remain static, developers can rely on the Application Programming Interfaces (APIs) in the SDK, and can update their applications to run on Android 1.0-compatible devices.
The Android Market beta is also to be launched with the T-Mobile G1, providing developers with a way to distribute their applications on that and later devices.

It remains to be seen how developers will respond to Android since, unlike Apple’s strictly supervised apps, those for the open source market will have to support multiple handsets.

Meanwhile Gadgetell has an interesting piece on how Google and T-Mobile plan to protect the network from malicious apps.